Machine for forming plastic material into lumps.



PATENTED OCT. 16, 1906.

. G. BRISTOW. MACHINE FOR FORMING PLASTIG MATERIAL INTO LUMPS.

APPLIGATION FILED MAY31, 1906.

2 SHEETS-SHEET 1.

W/TNESSES:

mnw a A TTOHNE YS PATENTBD OCT. 16, 1906.

G; BRISTOW. MACHINE FOR-FORMING PLASTIC MATERIAL INTO LUMPS.

2 SHEETS-SHEET 2.

-APPLIOATION FILED MAY 31, 1906.

" INVENTOI? fiarleafinlsiaw BY W12? WITNESSES ATTORNEYS Urnran STATES PATENT oFFIoE;

CHARLES BRIsToW, OF CHRISTCHURCH, NEW ZEALAND.

" MACHINE FOR FORMING PLASTIC MATERIAL INTO LUlVlPS.

No. 833,576. Specification of Letters Patent. Patented Oct. 16, 1906. Application filed Ma 31, 1906. Serial No. 319,517.

To all whom it y 0077108771: said rack-bar E is mounted to slide in a suit- Be it known that I, CHARLES BRIsTow, a able guideway E attached to the rear end of subject of the King of Great Britain, and a the box at the outer face thereof. A pinion resident of Christchurch, in the district of F is in mesh with the rack-bar E and is se 5 Canterbury, New Zealand, have invented a cured 011 a transversely-extending shaft F, 60 new and Improved Machine for Forming journaled in suitable bearings carried on the Plastic Material into Lumps, of which the folbox A, and on the said shaft F is arranged a lowing is a full, clear, and exact description. handle F under the control of the operator The object of the invention is to provide a for turning the shaft F to cause the pinion new and improved machine for forming but- F to impart a sliding motion to the rack-bar 65 ter and other plastic material into lumps E with a view to force the plunger E forward ready for table use, the machine being more for pressing the material out through the nozespecially designed for use in restaurants, Zle C, as before explained. As the material hotels, and like establishments and arranged issues through the nozzle 0 it is cut by a cut- I5 to permit an operator to quickly and con terG,preferablyintheformofawire attached 7 veniently form lumps of any desired shape in to a handle H, under the control of the opa very convenient and sanitary manner and erator and secured on a shaft I, journaled in without much physical exertion on the part suitable bearings I, attached to the rear side of the operator. of the box A. The cutter G when swung 2 The invention consists of novel features downward passes in close proximity to the 75 and parts and combinations of the same, outer end of the nozzle 0 to cut the material which will be more fully described hereinpressed through the nozzle into a small lump, after and then pointed out in the claims. and when the cutter G returns to an upper- A practical embodiment of the invention most position then it travels in a plane a disis representedin the accompanying drawings, tance from the front end of the nozzle C, so 80 forming a part of this specification, in which as to prevent the cutter during the return or similar characters of reference indicate corupward stroke from coming in contact with responding parts in all the views. the plastic material at the outer end of the Figure 1 is a rear side elevation of the imnozzle C. In order to obtain this result, a

3 provement. Fig. 2 isalongitudinal sectional lon itudinal sliding motion is given to the 5 elevation ofthe same, and Fig.3 is an enlarged shaft I, and for this purpose a cam-arm J is transverse section of the same. secured by a set-screw J on the shaft I, and

A suitably-constructed box A for contain the free beveled end J 2 of the cam-arm J rests ing the butter or other plastic material is prefagainst a cam K, fulcrumed at its lower end erably mounted on a clamp B for convenat K on the bearing I, previouslymentioned. 9 iently securing the machine to a table or spring L presses the cam K to normally other support. The box A is provided on hold the latter in an outermost position, as top with a hinged cover A for conveniently shown in Fig. 3, to hold the cutter G in an placing the plastic material into the box, the uppermost position, the outward-swinging 4 cover having suitable fastening devices for motion of the camK being limited byastop- 95 looking the cover in place after the material arm K projecting from the cam K and is placed in the box. On the front end of the adapted to abut against a shoulder I arbox A is formed an aperture A registering ranged on the bearing I. with a nozzle C of any desired shape and re- The cam K is provided at its front face with movably held in a suitable guideway D, arcam-faces K and K adapted to be alter- I00 ranged on the outer face of the front of the nately engaged by the beveled end J 2 of the box A. Within the box is arranged a luncam-arm J, so that when the handle H is ger E for pressing the plastic materia forswung downward, and with it the cutter G, ward through the openingA into and through and the shaft I is turned then the cutter G the nozzle 0, so as to give a desired shape to swings close to the outer end of the nozzle C, 5 the material forced out of the nozzle 0 and and when the cutter G has passed the nozzle corresponding to the shape of the nozzle. then the beveled end J moves in contact The plunger E is provided with a rack-bar with the cam-face K so that the shaft I is E, extending rearwardly through an openshifted forwardly in the direction of its ing A in the rear end of the box A, and the length. When the operator releases the 11 consequently of the handle H and the cutter G; but during this return movement the l cutter G travels in a plane a distance from the front end of the nozzle C. When the cutter G moves into an uppermost position, then the end J 2 face K so that the arm J and the shaft 1, together with the handle H are shifted rearwardly to bring the cutter G back to its starting position and into a transl verse vertical plane extending close to the front end of the nozzle C. The return swinging motion of the shaft 1 is limited by a stoparm J engaging the bearing 1, as plainly indicated in Fig. 3.

The operation is as follows: When the plunger-E is in arearmost position, then the box is filled with the plastic material, after which the cover A is closed and locked, and then the operator turns the handle F so as to move the plunger E forward with a view to press the plastic material out through the nozzle C. When the plastic material has been forced a desired distance out of the nozzle C, then the operator swings the handle H downward for the cutter G to cut off the material in front of the nozzle C to form a small lump of the desired thickness and of a shape corresponding to that of the nozzle. When the operator releases the pressure on the handle H, then the cutter G returns in a difvent the cutter from coming in contact with the plastic material during the return stroke.

The machine is very simple and durable in ferent plane, as previously explained, to preconstruction and is composed of compara- 1 cam-arm on of the arm J engages the caml and the cutter G,

and means for moving the cutter in different planes on the down and return strokes.

2. A machine for forming plastic material into lumps, comprising a box for containing the material, anozzle at one end of the box,

a plunger movable in the said box to force the material out of the nozzle, a cutter adapted to move down and up in front of the said nozzle, a shaft carrying the said cutter, and means for shifting the shaft in the direction of its length.

' 3. A machine for forming plastic material into lumps, comprising a box for containing the material, a nozzle at one end of the box, a plunger movable in the said box to force the material out of the nozzle, a cutter adapted to move down and up in front of the said nozzle, a shaft carrying the said cutter, a cam-arm on the said shaft, and a cam device engaged by the said cam-arm for shifting the shaft in the direction of its length.

4. A machine for forming plastic material into lumps, comprising a box for containing the material, a nozzle at one end of the box, a plunger movable in the said box to force the material out of the nozzle, a cutter adapted to move down and up in front of the said nozzle, a shaft carrying the said cutter, a camarm on the said shaft, and a spring-pressed pivoted cam having two cam-faces for alternate engagement by the said arm.

5. A machine for forming plastic material into lumps, comprising a box for containing the material, a nozzle at one end of the box, a plunger movable in the said box to force the material out of the nozzle, a cutter adapted to move down and up in front of the said nozzle, a shaft carrying the said cutter, a the said shaft, a spring-pressed tively few parts not liable to get easily out of pivoted cam having two cam-faces for alterorder.

Having thus claim as new and Patent 1 1. A machine for forming plastic material into lumps, comprising a box for containing the material, a nozzle at one end of the box,

a plunger movable in the said box to force the material out of the nozzle, a cutter mounted to swing in front of the said nozzle, ll

nate engagement by the said arm, and a stopdescribed my invention, 1 arm on the said shaft to limit the downward desire to secure by Letters swinging motion of the said cutter.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES BRISTOW.

WVitnesses:

G. HU'romNsoN, JOHN HIGHET. 

